Numbers 40a, 40 and 41 and Attached Railings is a Grade II listed building in the Islington local planning authority area, England. Terraced house. 13 related planning applications.
Numbers 40a, 40 and 41 and Attached Railings
- WRENN ID
- leaning-plinth-ivory
- Grade
- II
- Local Planning Authority
- Islington
- Constituency
- Islington South and Finsbury MP: Emily Thornberry (Lab)
- Country
- England
- Type
- Terraced house
- Address
- Numbers 40a, 40 and 41 and Attached Railings, Canonbury Square, N1 2AW
- OS grid reference
- TQ 317 844
- Coordinates
- 51.54379, -0.10092
- Source
- Historic England listing
Description
These are a group of three terraced houses, numbers 40A, 40, and 41, dating from approximately 1810 and developed by Henry Leroux. They are constructed of brown brick laid in a Flemish bond pattern, with stucco finishes. The roof is hidden behind a parapet. Each house has four storeys over a basement, with two windows at each level. The basement and ground floor are stuccoed, the ground floor featuring banded rustication. Steps lead to a round-arched entrance with fluted columns supporting a cornice, a fanlight with glazing bars, and panelled doors of original design. The ground-floor windows are also round-arched. Upper floor windows are flat-arched with gauged brick heads; the first-floor windows have particularly grand proportions (piano nobile), and have balconies supported by brackets with iron railings. These balconies are set within round-arched recessed panels with gauged brick heads. Some windows are 6/6 sash windows, particularly on the first and second floors. The property includes cast-iron area railings.
Local climate
Numbers 40a, 40 and 41 and Attached Railings sits in one of the driest parts of the UK, with an average of 690 mm of rain a year. This makes it drier than 95% of listed buildings in the UK. Its exposure to wind-driven rain is lower than that of 98% of listed buildings.
It experiences an average of 35 freeze-thaw cycles a year, more than 57% of listed buildings. Of these, 16 follow at least 1 mm of rain in the preceding 48 hours. Average temperatures at this location have risen by 0.3°C per decade since 1991.
Averages for 1991–2020; temperature trend 1991–2025. Figures describe the wider area (a grid cell of roughly 10 km), not the individual site. Contains modified Copernicus Climate Change Service information 2026.
More on this building
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- Full EPC report — heating system, energy costs, size, glazing, construction etc.
- Sale history — 12 transactions since 1998
- Related listed building consents — 13 applications
- Detailed attributes — period, style, materials, features
- Flood risk assessment
- Radon risk assessment
- Weather exposure and heating demand — rain and frost month by month and year by year, wind direction, solar and humidity
Matched applications, energy data and sale records are assembled automatically and may contain errors. Flag incorrect data.
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